Shelly Ahn Im, MD - Medicare Internal Medicine in Greenwich, CT

Shelly Ahn Im, MD is a medicare enrolled "Internal Medicine - Endocrinology, Diabetes & Metabolism" physician in Greenwich, Connecticut. She went to New York University School Of Medicine and graduated in 2004 and has 20 years of diverse experience with area of expertise as Internal Medicine. She is a member of the group practice The Westchester Medical Group, P.c and her current practice location is 500 W Putnam Ave Ste 435, Greenwich, Connecticut. You can reach out to her office (for appointments etc.) via phone at (475) 335-8692.

Shelly Ahn Im is licensed to practice in New York (license number 238571) and she also participates in the medicare program. She accepts medicare assignments (which means she accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance) and her NPI Number is 1740496470.

Contact Information

Shelly Ahn Im, MD
500 W Putnam Ave Ste 435,
Greenwich, CT 06830-6000
(475) 335-8692
(646) 974-9714

Map and Direction




Physician's Profile

Full NameShelly Ahn Im
GenderFemale
SpecialityInternal Medicine
Experience20 Years
Location500 W Putnam Ave Ste 435, Greenwich, Connecticut
Accepts Medicare AssignmentsYes. She accepts the Medicare-approved amount; you will not be billed for any more than the Medicare deductible and coinsurance.
  Medical Education and Training:
  • Shelly Ahn Im attended and graduated from New York University School Of Medicine in 2004
  NPI Data:
  • NPI Number: 1740496470
  • Provider Enumeration Date: 05/16/2007
  • Last Update Date: 10/17/2024
  Medicare PECOS Information:
  • PECOS PAC ID: 0840383436
  • Enrollment ID: I20071026000351

Medical Identifiers

Medical identifiers for Shelly Ahn Im such as npi, medicare ID, medicare PIN, medicaid, etc.
IdentifierTypeStateIssuer
1740496470NPI-NPPES

Medical Taxonomies and Licenses

TaxonomyTypeLicense (State)Status
207RE0101XInternal Medicine - Endocrinology, Diabetes & Metabolism 238571 (New York)Primary

Group Practice Association

Group Practice NameGroup PECOS PAC IDNo. of Members
The Westchester Medical Group, P.c6406752963400

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Shelly Ahn Im allows following entities to bill medicare on her behalf.
Entity NameThe Westchester Medical Group, P.c
Entity TypePart B Supplier - Clinic/group Practice
Entity IdentifiersNPI Number: 1881653822
PECOS PAC ID: 6406752963
Enrollment ID: O20031208000533

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Shelly Ahn Im is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing AddressPractice Location Address
Shelly Ahn Im, MD
500 W Putnam Ave Ste 435,
Greenwich, CT 06830-6000

Ph: (475) 335-8692
Shelly Ahn Im, MD
500 W Putnam Ave Ste 435,
Greenwich, CT 06830-6000

Ph: (475) 335-8692

Reviews and Comments


Internal Medicine Doctors in Greenwich, CT

Dr. Nicholas Harrison Browning, M.D.
Endocrinology, Diabetes & Metabolism
Medicare: Not Enrolled in Medicare
Practice Location: 75 Holly Hill Ln, Greenwich, CT 06830
Phone: 203-863-3400    
Francesca Montanari, MD
Endocrinology, Diabetes & Metabolism
Medicare: Accepting Medicare Assignments
Practice Location: 77 Lafayette Pl, Greenwich, CT 06830
Phone: 203-863-3700    
Dr. Lisa Kurian, M.D.
Endocrinology, Diabetes & Metabolism
Medicare: Accepting Medicare Assignments
Practice Location: 75 Holly Hill Ln, Greenwich, CT 06830
Phone: 203-869-6960    Fax: 203-869-5103
Dr. Steven Smith, M.D.
Endocrinology, Diabetes & Metabolism
Medicare: Accepting Medicare Assignments
Practice Location: 5 Perryridge Rd, Greenwich, CT 06830
Phone: 203-863-3911    
Dr. Marcelyn Carol Molloy, MD
Endocrinology, Diabetes & Metabolism
Medicare: Medicare Enrolled
Practice Location: 75 Holly Hill Ln, Greenwich, CT 06830
Phone: 203-869-6960    Fax: 203-869-5103
Dr. Alexander Delvecchio, M.D.
Endocrinology, Diabetes & Metabolism
Medicare: Accepting Medicare Assignments
Practice Location: 55 Holly Hill Ln, Suite 240, Greenwich, CT 06830
Phone: 203-863-4210    Fax: 203-622-1872
Dr. Sunil Rana, MD
Endocrinology, Diabetes & Metabolism
Medicare: Accepting Medicare Assignments
Practice Location: 49 Lake Ave Ste 2, Greenwich, CT 06830
Phone: 203-869-7704    Fax: 203-661-8596

Medicare Program: Medicare is a federal government program which provides health insurance to people who are 65 or older. This program also covers certain younger people with disabilities (who receive Social Security Disability Insurance - SSDI), and people with End-Stage Renal Disease (permanent kidney failure requiring dialysis or a transplant, sometimes called ESRD.

Medicare Assignment: Assignment means that your doctor, provider, or supplier agrees (or is required by law) to accept the Medicare-approved amount as full payment for covered services. Most doctors, providers, and suppliers accept assignment, but you should always check to make sure. Participating providers have signed an agreement to accept assignment for all Medicare-covered services.

NPI Number: The National Provider Identifier (NPI) is a unique identification number for covered health care providers. The NPI must be used in lieu of legacy provider identifiers in the HIPAA standards transactions. Covered health care providers and all health plans and health care clearinghouses must use the NPIs in the administrative and financial transactions adopted under HIPAA (Health Insurance Portability and Accountability Act).

Our Data: Information on www.medicarelist.com is built using data sources published by Centers for Medicare & Medicaid Services (CMS) under Freedom of Information Act (FOIA). The information disclosed on the NPI Registry are FOIA-disclosable and are required to be disclosed under the FOIA and the eFOIA amendments to the FOIA. There is no way to 'opt out' or 'suppress' the NPPES record data for health care providers with active NPIs.